2429-74-5 Usage
Description
DIRECT BLUE 15 is an organic sodium salt derived from the formal condensation of Pontamine sky blue 5B (acid form) with four equivalents of sodium hydroxide. It is a deep purple to dark blue microcrystalline powder, soluble in water, and insoluble in organic solvents. It exhibits various color changes when exposed to different chemicals, such as strong sulfuric acid, nitric acid, and hydrochloric acid.
Uses
Used in Textile Industry:
DIRECT BLUE 15 is used as a dye for cellulose fibers, such as cotton, glue cellulose fiber, silk, and rayon/Kam fabric dyeing. It provides good dyeing properties, with maximum affinity at 60-80°C and good discharge properties. The presence of copper ions in dyeing results in a darker color shade.
Used in Pulp Industry:
DIRECT BLUE 15 is used for dyeing pulp, offering good coloration and fastness properties.
Used in Biological Applications:
DIRECT BLUE 15 may be used as a substitute for trypan blue (T895523) for some biological and staining applications.
Used in Ink Production:
DIRECT BLUE 15 can also be used in the production of inks, providing the desired color and properties for various printing applications.
Standard:
The standard for DIRECT BLUE 15 includes various resistance and fastness properties, such as acid resistance (ISO 4-5, AATCC 5), alkali resistance (ISO 4, AATCC 4), light fastness (ISO 1-2, AATCC 1-2), soaping (ISO 1-2, AATCC 2), water fading (ISO 1-2, AATCC 1), and stain fading (ISO 1-2, AATCC 1).
Preparation
3,3′-Dimethoxylbenzidine double nitriding, in alkaline conditions and 4-Amino-5-hydroxynaphthalene-2,7-disulfonic acid(2 Moore) coupled.
Air & Water Reactions
Azo dyes can be explosive when suspended in air at specific concentrations. Soluble in water.
Reactivity Profile
DIRECT BLUE 15 is an azo compound. Azo, diazo, azido compounds can detonate. This applies in particular to organic azides that have been sensitized by the addition of metal salts or strong acids. Toxic gases are formed by mixing materials of this class with acids, aldehydes, amides, carbamates, cyanides, inorganic fluorides, halogenated organics, isocyanates, ketones, metals, nitrides, peroxides, phenols, epoxides, acyl halides, and strong oxidizing or reducing agents. Flammable gases are formed by mixing materials in this group with alkali metals. Explosive combination can occur with strong oxidizing agents, metal salts, peroxides, and sulfides.
Health Hazard
ACUTE/CHRONIC HAZARDS: When heated to decomposition DIRECT BLUE 15 emits very toxic fumes of nitrogen oxides, sulfur oxides and sodium oxide.
Fire Hazard
Flash point data for DIRECT BLUE 15 are not available; however, DIRECT BLUE 15 is probably combustible.
Safety Profile
A confirmed
carcinogen with experimental carcinogenic
data reported. An experimental teratogen.
Other experimental reproductive effects.
Mutation data reported. When heated to
decomposition it emits very toxic fumes of
NOx NazO, and SOx
Standard
Acid Resistance
Fading
Stain
ISO
4-5
AATCC
5
Check Digit Verification of cas no
The CAS Registry Mumber 2429-74-5 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 2,4,2 and 9 respectively; the second part has 2 digits, 7 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 2429-74:
(6*2)+(5*4)+(4*2)+(3*9)+(2*7)+(1*4)=85
85 % 10 = 5
So 2429-74-5 is a valid CAS Registry Number.
InChI:InChI=1/C34H28N6O16S4.Na/c1-55-25-9-15(3-5-23(25)37-39-31-27(59(49,50)51)11-17-7-19(57(43,44)45)13-21(35)29(17)33(31)41)16-4-6-24(26(10-16)56-2)38-40-32-28(60(52,53)54)12-18-8-20(58(46,47)48)14-22(36)30(18)34(32)42;/h3-14,37-38H,35-36H2,1-2H3,(H,43,44,45)(H,46,47,48)(H,49,50,51)(H,52,53,54);/q;+1/p-1/b39-31-,40-32-;
